<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=, initial-scale=1.0">
    <title>62</title>
    <style>
        /* 选择器:{ 属性名1:值1; } */
        h1{
            color: lightgreen;
        }
    </style>
</head>
<body>
    <h1>zzzzzzzzzzzz</h1>
</body>
</html>